LI V A. 



Plate XVI. 



Species 32. (Fig. a, h, Mus. Cimiing.) 

 Oliva nebulosa. Oliv. testa cylkdraeeo-oblongd, tmui- 

 diusculd, interdum subangudd et acumiimtd, cohimelld 

 basin versus concavo-depressd, plicis columellaribiis nu- 

 merosis, coi/fertis ; cceruleseente-albd, griseo-caruleo ne- 

 bulatd ant strigatd, zondfulvd, ftisco flciiitmidatd, ad 

 basin, columelld candescente-alhd, mactitd purjnired 

 basin versus notatd. 

 The clouded Olive. Shell cylindrically obloug, rather 

 swollen, sometimes rather narrow and aciimiuated, 

 columella concavely depressed towards the base, colu- 

 mellar plates numerous, close-set; bluish-white, cloud- 

 ed aud streaked ivith grey-blue, with a fulvous band, 

 . flamed with brown, at the base, columella bliush- 

 white, marked with a purple spot towards the base. 

 Lamarck, Auim. sans vert. (Deshayes' edit.) vol.x. p. 028. 



Hob. ? 



M. Duclos regards this species as the younp; of O.yib- 

 bosa, and I have myself quoteil it with douljt as a variety ; 

 it appears, however, to be distinct, especially as regards 

 the narrow form represented at Fig. 32 b. Both varieties 

 arc distinguished by a characteristic pm-ple spot towards 

 the base of the columella. 



Species 33. (Fig. o, c, Mus. Steere ; Fig.i, e, Mus.Cumiiig.) 

 Oliva acdminata. Olio, tesfd doHijnld, miiiiisid, .ydrd 



exsertd, acuminata, plicis coliniii'll,n-ihti\ 

 caUoso-coniortis ; piirpurasceiitf-spadici 



<indi> 



pur- 



vis perpaucis pallidis aspersd, ad siitiirus relicido no- 

 tatd, :ond lata spadiced, interdum iuterruptd, ad basin 

 cingulatd, columelld et apertures funce cterulescente- 

 albis. 

 The AcniiiNATED Olive. Shell elongated, narrow, spire 

 exserted, acuminated, columellar plaits numerous, 

 callously twisted at the base ; purplish-fawn, sprin- 

 kled with a few small pale spots, marked with a net- 

 work pattern at the sutm-es, and encircled at the 

 base with a broad fawn zone, which is sometimes 



iiiteiTupted with hght splashes, columella and inte- 

 rior of the aperture bluish-white. 

 Lam.\rck, Anim. sans vert. (Deshayes' edit.) vol.x. p. 1)25. 



Eadem var. Oliva luteola, Lamarck. 

 Hub. Senegal, north-west coast of Africa. 



In the young state of this species the delicate net-work 

 beneath tiie sutures is elaborately constnicted, and the 

 middle portion of the shell is frequently marked with in- 

 terrupted zigzag streaks. After the first few whorls this 

 design of pattern becomes obscured. 



Species 100. (Fig. 33rf, Mus. Steere.) 



Oliva subulata. Oliv. testd elongatd, angustd, teuui- 

 culd, subventricosd, spird exsertd, acuminatd, plicis 

 rohimellaribus ad basin call oso-con fort is ; fulvo-spadi- 

 red (Nil yriseo-carulescenie, i/innilis pnrrix albidk vm- 

 bratis notatd, strigis brevibus niijriciiililiiix oliUqtie con- 

 ceutricis infra suturas, zond lutii sjiiiiturd ad basin, 

 cingulatd, columelld et aperlur(t J'auce cirrnlesccnte- 

 albis. 



The subulate Olive. Shell elongaicd, narrow, rather 

 thin, slightly ventricose, spire exserted, acuminated, 

 columellar plaits callously twisted at the base ; ful- 

 vous-fawn or grey-blue, marked with small whitish 

 . shaded spots, with short obliquely concentric blackish 

 streaks beneath the sutures, encircled with a broad 

 (mva band at the base, columella and interior of the 

 aperture bliush-wliite. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. CiC^. 



Hab. Bencoolen, west coast of Sumatra (in saiiily mud 

 at low water) ; Cuming. 



The irregular numbering of this species arises ft-om the 

 circumstance of my having completed the arrangement 

 of the genus before discovering that Lamarck's 0. subu- 

 lata is truly distinct from his 0. acuminata. It is a 

 more ventricose, thinner shell, marked next the sutures 

 with short obliquely concentric streaks in place of net- 

 work, and inhabits a widely difl'erent locality. 



Septendii 



